I had read that paragraph but I found it ambiguous and read it as after 1857 when it became the Union line?

Certainly before 1900. Otherwise it had three names in four years?

"The Union Line was founded in 1853 as the Southampton Steam Shipping Company to transport coal from South Wales to Southampton. It was renamed the Union Steam Collier Company and then the Union Steamship Company. In 1857, renamed the Union Line..."
but I find it very unclear and I read it as after 1857?